Request PD even if no interfaces are set to track6 (Bug #4544)
Request PD even if no interfaces are set to track6 (Bug #4544)

See https://redmine.pfsense.org/issues/4544#note-4
ptorsten/pfsense,phil-davis/pfsense,pfsense/pfsense,dennypage/pfsense,dennypage/pfsense,NewEraCracker/pfsense,ptorsten/pfsense,phil-davis/pfsense,dennypage/pfsense,NOYB/pfsense,dennypage/pfsense,NOYB/pfsense,pfsense/pfsense,pfsense/pfsense,ptorsten/pfsense,NewEraCracker/pfsense,NewEraCracker/pfsense,phil-davis/pfsense,pfsense/pfsense,NOYB/pfsense,NewEraCracker/pfsense,phil-davis/pfsense